Big shoes to fill: Steve Addazio helped BC make huge strides in 2013, but the task of keeping the momentum going gets much harder without star running back and Heisman finalist Andre Williams, who rushed for an NCAA-best 2,177 yards and 18 touchdowns. Tyler Rouse and Myles Willis will attempt to fill the vacancy this spring, and both have potential. Willis averaged nearly 6 yards per carry as Williams’ primary backup last year. The real intrigue might wait until fall, however, when four freshmen running backs arrive on campus.

Murphy makes the move: It’s an open competition at quarterback after Chase Rettig’s departure, but there’s no question the most intriguing player in the race is Florida transfer Tyler Murphy. The fifth-year senior worked with Addazio at Florida, and he’ll open the spring competing with redshirt freshman James Walsh and early enrollee Darius Wade. That’s a deep enough bench that BC didn’t worry about moving Josh Bordner, last year’s backup, to tight end. With both of last year’s starting tackles gone, too, Murphy’s experience could be even more important in determining the outcome of the QB battle.

Restocking the LBs: Even at its low points in recent years, Boston College managed to churn out plenty of talented linebackers, but the position gets a massive overhaul this year. First-team All-ACC star Kevin Pierre-Louis (108 tackles in 2013) is gone, as is Steele Divitto (112 tackles). That leaves junior Steven Daniels (88 tackles, 5 sacks) as the lone returning starter. Josh Keyes adds some experience, but it’ll be a group in transition this spring.

Clemson

Spring start: March 5

Spring game: April 12

What to watch:

Replacing Boyd: The talk of Clemson’s spring camp will no doubt surround the quarterbacks, as senior Cole Stoudt, sophomore Chad Kelly and early enrollee Deshaun Watson vie for the job. Stoudt’s experience makes him the early favorite, but it’s Watson, a dual-threat QB with immense talent, who could steal the show. Coach Dabo Swinney has already lauded Watson as perhaps the most talented quarterback Clemson has signed, so all eyes will be on the freshman to see if he can back up all that hype with a strong spring.

Skill-position shuffling: If the QB battle is the headliner, there are plenty of significant sideshows on offense this spring. Clemson waved goodbye to receivers Sammy Watkins (1,464 yards, 12 TDs) and Martavis Bryant (828 yards, 7 TDs) and tailback Roderick McDowell (1,025 yards, 5 TDs). That means a massive overhaul on offense, where there’s no clear-cut bell cow at running back (Zac Brooks and D.J. Howard return as potential options) and the receiving corps will be looking for some new top targets.

Dominance up front: On offense for Clemson, there’s plenty of concern for what the Tigers lost. On defense, however, the excitement is all about what they’re bringing back. Clemson’s defensive line, in particular, could be one of the nation’s best. When All-American Vic Beasley announced his return for his senior season, the Tigers knew they could have something special. Add sophomore lineman Shaq Lawson and senior Stephone Anthony at linebacker and Clemson has all the makings of a dominant pass rush.

Florida State

Spring start: March 19

Spring game: April 12

What to watch:

The running backs: After leading FSU in rushing three straight years, Devonta Freeman is gone. So, too, is James Wilder Jr. But the Seminoles enter spring with a quartet of intriguing options to replace their departed stars, led by Karlos Williams (730 yards, 11 TDs in 2013) and Dalvin Cook (No. 21 on the 2013 ESPN300). Mario Pender, who missed last year with academic issues, also figures to be in the mix.

The defensive front: There are a wealth of question marks here, both in terms of personnel and scheme. With Timmy Jernigan, Telvin Smith and Christian Jones gone, there are plenty of jobs up for grabs. The development of Mario Edwards Jr., Eddie Goldman and Terrance Smith will be key, but with Charles Kelly taking over the defense, it’s also still a bit unclear how much the scheme will deviate from what Jeremy Pruitt ran with so much success in 2013.

Jameis Winston’s swing: A year ago, the big question was who would win the QB battle. Now, Winston’s got a Heisman Trophy and will be a favorite to win it again in 2014. So the intrigue surrounding the FSU star QB is more on the baseball field, where once again, he’ll be splitting time this spring. Perhaps the bigger question is how the rest of the QB depth chart shakes out, with Sean Maguire the elder statesman and John Franklin III looking to make his move.

Louisville

Spring start: March 18

Spring game: April 11

What to watch:

Bobby’s back: After a seven-year hiatus that included an abrupt departure from the Atlanta Falcons and a damaging scandal at Arkansas, Bobby Petrino is back in charge at Louisville insisting he’s a changed man. Fans will be watching closely to see if he has changed his stripes away from the field, but also whether he can rekindle the same offensive fireworks he delivered in his first stint with the Cardinals.

Replacing Bridgewater: It’s an open QB battle, and for Petrino, it’s among the first chances he’ll have to see the players vying to replace departed star Teddy Bridgewater in action. Sophomore Will Gardner is perhaps the favorite, but he has just 12 career pass attempts. Redshirt freshman Kyle Bolin is close behind, while Reggie Bonnafon is set to arrive in the fall.

New look on D: Louisville finished the 2013 season ranked second nationally in scoring defense, trailing only national champion Florida State. But this spring, things will look a bit different for the Cardinals, as Todd Grantham takes over as the new defensive coordinator after being lured from Georgia. Grantham figures to bring a 3-4 scheme to Louisville, which will certainly shake things up a bit. Defensive end Lorenzo Mauldin missing the spring with a shoulder injury only clouds the situation further.

NC State

Spring start: March 4

Spring game: April 12

What to watch:

Brissett takes the reins: The sting of last year’s winless ACC season was barely in the rearview mirror before coach Dave Doeren named Florida transfer Jacoby Brissett his new starting quarterback. Brissett spent last year on the sideline, but apparently Doeren saw enough during practice to comfortably wave goodbye to Pete Thomas, who announced his transfer. There will be ample spotlight on Brissett this spring as he tries to revive the underperforming NC State passing game.

The new faces: If 2013 was about cleaning house, this spring begins the far more difficult project of rebuilding. For NC State, that means plenty of new faces, including a whopping seven early enrollees headlined by safety Germain Pratt. While there are ample holes for Doeren to fill in Year 2, these incoming freshmen could certainly push for starting jobs and bring an influx of depth that the Wolfpack sorely missed last year.

Shoring up the lines: NC State’s 2014 signing class included 11 offensive and defensive linemen, and that’s just the start of the overhaul at the line of scrimmage. Last season, the Wolfpack allowed the second most sacks in the ACC (35) on offense while its defensive front recorded the fewest sacks in the conference (20). That’s a formula for disaster, and Doeren understands NC State must get much better in the trenches. Brissett’s arrival at QB could help, but the bottom line is NC State needs to see improvement on both sides of the line, and it needs to start this spring.

Syracuse

Spring start: March 18

Spring game: April 19

What to watch:

Hunt’s next step: 2013 was a roller coaster season for Terrel Hunt. He lost the QB battle in fall camp, stepped in as starter after two weeks and was dominant, struggled badly through the midsection of the season, then closed strong with back-to-back come-from-behind wins. Now that he has experience, it will be interesting this spring to see how much he’s progressed. The talent is there, and spring practice should give Hunt a chance to refine it a bit more.

The defensive front: Syracuse finished its first ACC season ranked fourth in rushing defense and third in sacks despite myriad personnel issues entering the year, but more questions remain as the Orange look toward 2014. With star lineman Jay Bromley and veteran linebacker Marquis Spruill gone, the Orange are looking to fill sizable holes. Robert Welsh figures to be the anchor of the Syracuse pass rush, and the Orange could benefit from the return of Donnie Simmons, who missed 2013 with a knee injury.

Secondary concerns: Syracuse got a chance to learn what life was like without top cover corner Keon Lyn after the senior fractured his kneecap late last year, but while Brandon Reddish did an admirable job as his replacement, a whole new set of questions crops up in the secondary this spring. Syracuse figures to have openings at both corner and safety, and while Julian Whigham, Darius Kelly and Ritchy Desir offer options, there’s a lot to be decided on the practice field this spring.

Wake Forest

Spring start: March 25

Spring game: April 26

What to watch:

Clawson’s early impact: It’s been 14 years since Wake Forest opened a spring camp with someone other than Jim Grobe calling the shots, so there’s no question this will be an intriguing few weeks in Winston-Salem. Dave Clawson takes over after leading Bowling Green to a MAC championship, and he inherits a major rebuilding job. First up for the coach will likely be creating an offensive identity -- something Grobe couldn’t do in 2013.

Identifying some offense: If 2013 was an offensive slog for Wake Forest, 2014 threatens to be much, much worse. As bad as things got at times last year, the Deacons at least had veterans to rely on. This season, Wake’s leading passer (Tanner Price), rusher (Josh Harris), receiver (Michael Campanaro) and top tight end (Spencer Bishop) are all gone. On the plus side, plenty of younger players saw action in 2013. The job this spring is to figure out who can take a big step forward entering the 2014 campaign.

The defensive scheme: Wake appears to be moving away from the 3-4 that was a hallmark of recent seasons, as new coordinator Mike Elko tries to maximize the talent remaining on the roster. Without veteran lineman Nikita Whitlock, Wake’s defensive front will have a far different look in 2014, and this spring will largely be about Elko identifying playmakers and tweaking his system to fit their skill sets.